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Loans and Allowance for Loan Losses - Narrative (Details) | 9 Months Ended |
--- | --- | ---
Sep. 30, 2019 USD ($) loan segment | Sep. 30, 2018 USD ($) loan | Dec. 31, 2018 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Loan portfolio segments | segment | 5 |  |
Number of contracts | loan | 0 |  |
Number of contracts, subsequent payment default | loan | 0 |  |
Other real estate owned | $ | $ 1,561,000 |  | $ 2,495,000
Trouble Debt Restructuring [Member] |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Loans that met criteria for restructured | $ | $ 61,000 |  | $ 116,000
Number of contracts, nonaccrual | loan | 0 |  |
Commercial Real Estate [Member] |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Loans that met criteria for restructured | $ |  | $ 622,000 |
Number of contracts | loan |  | 1 |
Consumer Real Estate [Member] |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Loans that met criteria for restructured | $ |  | $ 34,000 |
Number of contracts | loan |  | 1 |
Residential Real Estate [Member] |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Other real estate owned | $ | $ 0 |  |

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